You upgrade a Remote Installation Service (RIS) server to use Windows Deployment Services (WDS). However, images that are based on an ACPI Uniprocessor (ACPI APIC UP) Hardware Abstraction Layer (HAL) are not available. These images are not available when you start a Pre-Boot execution (PXE) client WDS boot image on an ACPI Multiprocessor (ACPI APIC MP) computer.

This problem occurs when the multiprocessor computer is running Windows Server 2003, Windows XP, or Microsoft Windows 2000.